The Celery (Apium graveolens L.) Project


The aim of this project is to develop disease resistant varieties adapted to California. The main disease present in the state is fusarium yellows, caused by Fusarium oxysporum fs apicola race 2. Our program has released many resistant lines to breeders, such as UC1, UC8, UC10 and UC26 among others. These lines have served seed companies to develop most of the existing Fusarium resistant varieties. In 1994 we released the fusarium resistant variety `Promise', which is now available. The source of resistance to fusarium derives from celeriac, another form of cultivated A. graveolens .

Other aims of the project are to develop late blight and celery mosaic virus (CeMV)  resistant varieties. For this purpose we are using wild species as sources of these traits.

In order to have an efficient breeding program, basic research aimed to the development and use of molecular markers in breeding is also in place. We have constructed DNA-based marker linkage map for this crop covering most of its chromosomes (see Yang and Quiros 1995, Genome 38:36-44).

We have found a couple of molecular markers linked to CeMV allowing us to do marker assisted selection for this trait.

Our most recent task has been to pyramid multiple disease resistance genes into celery, including resistance to fusarium yellows, late blight and CeMV. We are also attempting to develop lies resistant to leafminers, using as a resistance source the wild relative A. prostratum.

Celery research is supported by the California Celery Research Advisory Board


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